121133905 has 8 divisors (see below), whose sum is σ = 145876032. Its totient is φ = 96563568.

The previous prime is 121133897. The next prime is 121133953. The reversal of 121133905 is 509331121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121133905 - 2³ = 121133897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121133905.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41389 + ... + 44218.

It is an arithmetic number, because the mean of its divisors is an integer number (18234504).

Almost surely, 2^121133905 is an apocalyptic number.

It is an amenable number.

121133905 is a deficient number, since it is larger than the sum of its proper divisors (24742127).

121133905 is an equidigital number, since it uses as much as digits as its factorization.

121133905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85895.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 121133905 is about 11006.0849079044. The cubic root of 121133905 is about 494.7911304612.

The spelling of 121133905 in words is "one hundred twenty-one million, one hundred thirty-three thousand, nine hundred five".